Dust collecting unit of vacuum cleaner

Abstract

A dust collecting unit for a vacuum cleaner is provided. The dust collecting unit includes a dust separating chamber with an air inlet formed on an outer surface thereof and an air outlet formed on one side thereof, a main dust collecting chamber formed in the dust separating chamber for separating dust and dirt in a cyclonic fashion, an auxiliary dust collecting chamber formed at one side of the main dust collecting chamber, and a partition plate for partitioning the main dust collecting chamber. The dust collecting unit allows an amount of air sucked and the efficiency of collecting dust and dirt to be greatly increased.

1. A dust collecting unit for a vacuum cleaner, comprising:
 a dust separating chamber with an air inlet formed tangentially on an outer surface of a wall forming the dust separating chamber; 
 a main dust collecting chamber for collecting dust; 
 an auxiliary dust collecting chamber, wherein the dust separating chamber and the auxiliary dust collecting chamber communicate through an opening formed on a mutual wall separating the dust separating chamber from the auxiliary dust collecting chamber, and wherein the opening is formed on an upper part of the mutual wall near the top of the dust separating chamber; and 
 a cover which is mountable to a top of the dust separating chamber. 
 
   
   
     2. The dust collecting unit of  claim 1 , wherein the main dust collecting chamber and the auxiliary dust collecting chamber communicate through an opening formed on a mutual wall separating the main dust collecting chamber from the auxiliary dust collecting chamber. 
   
   
     3. The dust collecting unit of  claim 2 , wherein the mutual wall separating the dust separating chamber from the auxiliary dust collecting chamber and the mutual wall separating the main dust collecting chamber from the auxiliary dust collecting chamber are parts of a same boundary wall. 
   
   
     4. The dust collecting unit of  claim 1 , wherein the mutual wall separating the dust separating chamber from the auxiliary dust collecting chamber is curved. 
   
   
     5. The dust collecting unit of  claim 1 , wherein the cover is configured to be detachable and to cover both an opened end of the dust separating chamber and a first opened end of the auxiliary dust collecting chamber. 
   
   
     6. The dust collecting unit of  claim 5 , further comprising an outlet formed in the detachable cover, and a fine dust filter positioned on the cover to extend within the dust separating chamber. 
   
   
     7. The dust collecting unit of  claim 1 , further comprising a hinged cover configured to cover both an opened end of the main dust collecting chamber and a second opened end of the auxiliary dust collecting chamber. 
   
   
     8. A dust collecting unit for a vacuum cleaner, comprising:
 a first barrier positioned between a dust separating chamber and a main dust collecting chamber so that the dust separating chamber and the main dust collecting chamber are on opposite sides of the first barrier; 
 a second barrier positioned between an auxiliary dust collecting chamber and both the dust separating chamber and the main dust collecting chamber so that the auxiliary dust collecting chamber is on a first side of the second barrier, and both the dust separating chamber and the main dust collecting chamber are on a second side of the second barrier, wherein a first communication hole is formed in the second barrier for communication between the dust separating chamber and the auxiliary dust collecting chamber, and a second communication hole is formed in the second barrier for communication between the main dust collecting chamber and the auxiliary dust collecting chamber. 
 
   
   
     9. The dust collecting unit of  claim 8 , wherein the first barrier and the second barrier contact at a curved line. 
   
   
     10. The dust collecting unit of  claim 9 , wherein a curved peripheral edge of the first barrier is positioned perpendicularly on a curved surface of the second barrier. 
   
   
     11. The dust collecting unit of  claim 8 , wherein a communication hole is formed in the first barrier. 
   
   
     12. The dust collecting unit of  claim 8 , wherein the dust separating chamber is stacked atop the main dust collecting chamber, with the first barrier disposed therebetween, and wherein the auxiliary dust collecting chamber extends vertically along a height of the dust separating chamber stacked atop the main dust collecting camber, with the second barrier disposed therebetween. 
   
   
     13. A dust collecting unit for a vacuum cleaner, comprising:
 a cylindrical first chamber adapted to separate dust from air by cyclonic action; 
 a cylindrical second chamber in communication with the first chamber and adapted to collect dust separated by cyclonic action in the first chamber; 
 a third chamber in communication with both the first and second chambers and adapted to collect dust from both the first and second chambers; and 
 a curved mutual wall that separates both the first and second chambers from the third chamber. 
 
   
   
     14. The dust collecting unit of  claim 13 , further comprising a plurality of communication holes, each of which is formed in the mutual wall, wherein a communication hole is formed between the third chamber and each of the first and second chambers. 
   
   
     15. A dust collecting unit for a vacuum cleaner, comprising:
 a cylindrical first chamber adapted to separate dust from air by cyclonic action; 
 a cylindrical second chamber in communication with the first chamber and adapted to collect dust separated by cyclonic action in the first chamber; 
 a third chamber in communication with both the first and second chambers and adapted to collect dust from both the first and second chambers; and 
 a detachable cover adapted to cover an end of the first and third chambers. 
 
   
   
     16. The dust collecting unit of  claim 15 , wherein the cover has a centrally located air outlet hole. 
   
   
     17. The dust collecting unit of  claim 16 , wherein a filter is attached to the air outlet hole of the cover, and wherein the filter is positioned within the first chamber. 
   
   
     18. A dust collecting unit for a vacuum cleaner, comprising:
 a cylindrical first chamber adapted to separate dust from air by cyclonic action; 
 a cylindrical second chamber in communication with the first chamber and adapted to collect dust separated by cyclonic action in the first chamber; 
 a third chamber in communication with both the first and second chambers and adapted to collect dust from both the first and second chambers; and 
 a hinged cover rotatably coupled to the dust collecting unit and adapted to cover an end of the second and third chambers. 
 
   
   
     19. A dust collecting unit for a vacuum cleaner, comprising:
 a cylindrical first chamber adapted to separate dust from air by cyclonic action; 
 a cylindrical second chamber in communication with the first chamber and adapted to collect dust separated by cyclonic action in the first chamber; and 
 a third chamber in communication with both the first and second chambers and adapted to collect dust from both the first and second chambers, wherein the third chamber extends a full stacked height of both the first and second chambers.